function f() {
    var a = $(".logo").outerHeight();
    var b = $(".board").outerHeight();
    var c = b - a;
    document.getElementById("form").style.height = c + "px";

    var d = $(".username").outerWidth();
    var e = $(".ico").outerWidth(true);
    var f = d - e;
    document.getElementById("input1").style.width = f + "px";
    document.getElementById("input2").style.width = f + "px";

    setTimeout("f()", 100);
}

